Here's a couple of lengthy threads from other forums.
https://www.reef2reef.com/threads/calling-on-tropic-marine-for-help.876031/ post #143 is Lou from Tropic Marin
Advanced - Tropic Marin Pro Salt - Update
Hi Everyone, Not sure if you visit other forums or have come across any noise regarding Tropic Marin Pro-Reef salt mix and a slight residue, smell, or cloudiness after mixing. I won't post the thread but on another forum people got pretty aggressive and spoke out of turn but Tropic Marin...
humble.fish
https://www.reef2reef.com/threads/calling-on-tropic-marine-for-help.876031/ post #143 is Lou from Tropic Marin
Tropic Marin Addresses Issue of Turkish Blended Pro Reef Salt | Reef Builders | The Reef and Saltwater Aquarium Blog
It’s been less than a week since Tropic Marin made its first acknowledgement of issues regarding the ‘Turkish Blend’ of their Pro Reef aquarium seawater salt mix but we’ve already received a follow up…
reefbuilders.com
Tropic Marin Halts Production of ‘Turkish Blend’ of Pro-Reef Salt Mix | Reef Builders | The Reef and Saltwater Aquarium Blog
Turkish Blend usually engenders a connotation of fine tobacco or strong coffee but the term is coming to mean something very different for one flavor of Tropic Marin’s popular saltwater mixes.
reefbuilders.com